Tap-spout for smelting-furnaces.



F. D. GROSS.

TAP SPOUT FOR SMELTING FURNACES.

APYLIOATIOH FILED JULY 11, 1906.

Patented Jan. 19. 1909.

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UNITED STATES PATENT OFFICE.

FREDERICK DANIEL GROSS, OF DENVER,'COLORADO, ASSIGNOR OF ONE-HALF TO COLORADO IRON WORKS COMPANY, OF DENVER, COLORADO.

TAP-SPOUT FOR SMELT ING-FURNA CES.

Specification of Letters Patent.

Application filed July 11, 1906.

Patented Jan. 19, 1909.

Serial No. 326,735.

To all whom it may concern:

Be it known that I, FREDERICK DANIEL GROss, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Tap- Spouts for Smelting-Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference eing had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in tap spouts for smelting furnaces.

T he tap spout is the device through which the molten material from the smelting furnace passes from the furnace to the settler or the rece tacle where the final separation of the slag rom the matte is effected. Heretofore so far as I am aware these spouts have been made entirely of copper since copper is alpparently the only material that will resist t e wearing or destructive action of the matte on the tip for any considerable length of time. The objection to the copper tap spout is that when the tip becomes worn the entire spout must be removed and a new one substituted.

In In improved construction I make the tip of t e spout removable'whereby when it becomes Worn the tip may be removed and a new one substituted, and as the tip constitutes but a small part of the spout, this construction is exceedingly advantageous over the original construction. Moreover in my improved construction the body of the spout consists of an outer shell of cast iron provided with a lining of refractory brick or brick ada ted to long resist the action of the matte. have found magnesic brick best adapted for this urpose though the invention is not limite to this articular material.

Having briefly outliner my im roved construction, I will proceed to descri e the same in detail, reference being made to the accompanying drawing in which,

Figure 1 is a vertical longitudinal section of my improved tap spout taken on the line 1-1 Fig. 2. Fig. 2 is a top plan view of the tap spout. Fig. 3 is a front end elevation of the same.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the cast iron base and 6 the vertical side walls of the s out. These side walls are also composed 0 cast iron and are connected with the base by means of bolts 7 assed through registering openings formed in lateral flanges 8 of the side walls and in the outer edges of the base 5. The base projects beyond the side walls sufficiently for the purpose. Located within this cast iron shell is a lining 9 preferably com osed of magnesic brick. 'Ihis lining extents to the top of the cast iron side walls and covers the entire inner surface of the spout except at the front end where is located a water jacketed copper tip 10. The height of this ti is regulated according to the pressure of blast, the tip being raised high enough to give suflicient head to prevent the blast from blowing through. As shown in the drawing the tip is hollow as in dicated at 12 and water is circulated therethrough by means of pipes 13. The water which enters throu h one of these pipes passes out through t e other in the ordinary we where a water jacket is employed.

n actual practice the lining 9 will be comosed of brick suitably luted together to orm virtually an integral lining. In removing the tip, however, the lining bricks adjacent the ti will have to be removed. In the drawing t e lining 9 is for convenience shown as integral but it must be understood that it is referable to form it of individual bricks suitably luted to ether as above stated since in removing t e tip this structure is greatly advantageous.

The rear extremity of the spout or that toward the right shown in Figs. 1 and 2 of the drawing, rests upon a bed-plate 14 of a smelting furnace (not shown). In the rear of the spout is located a tap jacket 15 through which water is circulated by means of pipes 16. This jacket is provided with an opening 17 communicating with the spout proper. The spout may be connected with the furnace in any suitable manner. As shown in the drawing this is accomplished by means of side rods 17 whose forward extremities pass throu h slotted lugs 18 formed on the side wal s of the spout; while the opposite extremities of these rods are connected with stationary rails 19. The extremities of the rods which pass through the lu s 18 are secured in place by nuts 20.

I he cast iron side Walls 6 of the spout are provided at their forward extremit1es with lnwardly-pro'ecting flanges 6 which occupy a osition in rout of the tip and the lining 9. T ese parts are therefore supported in front by these flanges.

In order to remove the tip, the lining located above its extremities must of course be taken out, and after a new tip is substituted, the bricks removed are put in position and luted to the body of the lining as before.

From the foregoing description the use of my improved device will be readil T understood. It is connected with the ischarge end of a smelting furnace and the molten mass including both the slag and the matte is drawn off from the furnace through this spout. The matte which is heaviest or of greatest specific gravity is the element which produces the principal wear upon the spout and as heretofore intimated this wear is greater ugon the tip where the molten mass escapes t an upon any other art. Hence this tip is made of co per ant jacketed to permit a constant circu ation of Water. The cutting action is due to the chemical action of the matte which rapidly dissolves anything but copper ninety nine per cent. pure, and will even cut that quite ra idly at times. The tip being readily remova le, is a very important feature since the magnesic linin of the body of the spout is very durable an Will outwear a great many tips.

As heretofore stated in the ordinary con struction when the tip became worn, the entire spout had to be discarded, and some times even a pure ninety-nine per cent. copper spout will cut through in a few days.

Having thus described my invention, what I claim is:

A tap spout for smelting furnaces com prising an outer casing composed of cast mm, a lining of magnesia brick, a water iacketed copper tip located in the front othe spout, a tap jacket located in the rear end of the spout and provided with coolin means, the walls of the spout being provided with lugs, and braces or rods adapted to pass through the lugs and connect with the furnace, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK DANIEL GROSS.

Witnesses:

RALPH E. GIBBs, LEON HOFFMAN. 

